Home / 53,639.28-80,397-39,387.60

Finding the Fourth Proportional to 53,639.28, 80,397 and 39,387.60

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Solution

The fourth proportional to 53,639.28, 80,397 and 39,387.60 is: 59,035.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,639.28 : 80,397 = 39,387.60 : x
  2. Step 2: Convert to fraction form
    53,639.28/80,397 = 39,387.60/x
  3. Step 3: Cross multiply
    53,639.28x = 80,397 × 39,387.60
  4. Step 4: Simplify right side
    53,639.28x = 3,166,644,877.20
  5. Step 5: Solve for x
    x = 3,166,644,877.20/53,639.28
  6. Step 6: Final answer
    x = 59,035.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.